Sweet, sugary, colorful, flaky, rich, eggy bread. It comes on a bicycle. If you sit on a street corner in any of the pueblos along Mexico's Mayan Riviera coast, it will pass by. All you need to do is wait.
Of course the tamales bike will pass by too, with chicken-stuffed cornmeal cakes hand wrapped in banana leaves and pork and mole wrapped in corn husks. And the agua fresca bike with orange and pineapple and mango and chaya and hibiscuis waters, and the tortas bike with sandwiches piled high with pulled pork or roasted chicken and shredded cabbage and dripping with hot sauce.
In fact, if you wait long enough, your whole meal will pass by. Which is a good thing because you should probably eat something healthy before you indulge in the Yucatan's famous sweet desserts.
Listen for the bell or the whistle or the funny little horn and pull out a few pesos. They don't take US dollars and they often don't have change. So carry small bills and if the bread is 18 pesos, just give them a twenty and say, "No cambio" and smile. You'll get a big smile in return.